Homework Answers
It is impossible for a device to transform a given amount of heat completely into work.
So, given statement is false.
For real devices efficiency is less than one.
If above statement is correct then efficiency of the device must be equal to one.
Add Answer to:
19) It is possible for a device to transform a given amount of heat completely into...
18) 10 J of heat are removed from a gas sample while it is being compressed...
18) 10 J of heat are removed from a gas sample while it is being compressed by a piston that does 30 J of work. Determine, in J, the change in thermal energy of the system. a) 4 b) 10 c) 20 d) 3 Answer_______________ 19) It is possible for a device to transform a given amount of heat completely into work. a) true b) false Answer_______________ 20) The density of a block of iron is 7,860 kg/m3. The density...
18) 10 J of heat are removed from a gas sample while it is being compressed...
18) 10 J of heat are removed from a gas sample while it is being compressed by a piston that does 30 J of work. Determine, in J, the change in thermal energy of the system. b) 10 c) 20 d) 3 Answer 19) It is possible for a device to transform a given amount of heat completely into work. a) true b) false Answer 20) The density of a block of iron is 7,860 kg/m”. The density of mercury...
17) Determine the work, in J, required to stop a 1500-kg car traveling at 30 m/s....
17) Determine the work, in J, required to stop a 1500-kg car traveling at 30 m/s. (hint: use the work-energy theorem). a) 2.4 x 105 b) 8.2 x 105 c) 1.7 x 105 d) 6.8 x 105 Answer_______________ 18) 10 J of heat are removed from a gas sample while it is being compressed by a piston that does 30 J of work. Determine, in J, the change in thermal energy of the system. a) 4 b) 10 c) 20...
is Spring 19 5.1 For a device operating on a cycle has to comply with either the Kelvin-Planck Statement or the Clausius Statement of the Second Law of Thermodynamics (a) True(b) False (a) It gai...
is Spring 19 5.1 For a device operating on a cycle has to comply with either the Kelvin-Planck Statement or the Clausius Statement of the Second Law of Thermodynamics (a) True(b) False (a) It gained 1000 KJ by heat (b) It gained 1000KJ by net work input only (c) It gained 5.2 The internal energy of a closed system increases by 1000 KJ. This is due to: 1000KJ by a combination of heat and work input (d) Depending on the...
Which of the following is a TRUE statement? Question options: It is possible for heat to...
Which of the following is a TRUE statement? Question options: It is possible for heat to flow spontaneously from a hot body to a cold one or from a cold one to a hot one, depending on whether or not the process is reversible or irreversible. The second law of thermodynamics is a consequence of the first law of thermodynamics. It is not possible to convert work entirely into heat. It is impossible to transfer heat from a cooler to...
Which of the following is a TRUE statement? ...It is not possible to convert work entirely into heat.
Which of the following is a TRUE statement? Question options: It is possible for heat to flow spontaneously from a hot body to a cold one or from a cold one to a hot one, depending on whether or not the process is reversible or irreversible. The second law of thermodynamics is a consequence of the first law of thermodynamics. It is not possible to convert work entirely into heat. It is impossible to transfer heat from a cooler to...
PartA Calculate the amount of heat required to completely sublime 97.0 g of solid dry ice...
PartA Calculate the amount of heat required to completely sublime 97.0 g of solid dry ice (CO2) at its sublimation temperature. The heat of sublimation for carbon dioxide is 32.3 kJ/mol. Part B How much heat is evolved in converting 1.00 mol of steam at 155.0 ∘C to ice at -55.0 ∘C? The heat capacity of steam is 2.01 J/(g⋅∘C) and of ice is 2.09 J/(g⋅∘C).
Calculate the amount of heat required to completely sublime 58.0 g of solid dry ice (CO2)...
Calculate the amount of heat required to completely sublime 58.0 g of solid dry ice (CO2) at its sublimation temperature. The heat of sublimation for carbon dioxide is 32.3 kJmol−1.
1. In an isothermal process a. No heat exchange occurs b. Volume remains constant c. Pressure...
1. In an isothermal process a. No heat exchange occurs b. Volume remains constant c. Pressure remains constant d. Temperature remains constant 2. In an adiabatic process a. No heat exchange occurs b. Volume remains constant c. Pressure remains constant d. Temperature remains constant 3. If you try to cool your kitchen on a hot day by opening your refrigerator door, the temperature in your kitchen will a. Decrease b. Increase c. Remain unchanged 4. Entropy can be a. Both...
Given the following thermochemical equation, calculate the amount of heat (in kJ) that is released when...
Given the following thermochemical equation, calculate the amount of heat (in kJ) that is released when 35.0 g of Na2O2 completely react with excess amount of water . 2 Na2O2 (s) + 2 H2O (l) → 4 NaOH (aq) + O2 (g) Δ H = - 126 kJ
18) 10 J of heat are removed from a gas sample while it is being compressed by a piston that does 30 J of work. Determine, in J, the change in thermal energy of the system. b) 10 c) 20 d) 3 Answer 19) It is possible for a device to transform a given amount of heat completely into work. a) true b) false Answer 20) The density of a block of iron is 7,860 kg/m”. The density of mercury...
is Spring 19 5.1 For a device operating on a cycle has to comply with either the Kelvin-Planck Statement or the Clausius Statement of the Second Law of Thermodynamics (a) True(b) False (a) It gained 1000 KJ by heat (b) It gained 1000KJ by net work input only (c) It gained 5.2 The internal energy of a closed system increases by 1000 KJ. This is due to: 1000KJ by a combination of heat and work input (d) Depending on the...
Most questions answered within 3 hours.
-
Which of the following statements is true regarding the nature
of culture?
A.We are born with...
asked 11 minutes ago -
(a) 2
NO2(g) à 2
NO(g) +
O2(g)
The rate law for this reaction
is 2nd...
asked 14 minutes ago -
Write the overall reaction for the RedOx
reaction (below) when it occurs in an acidic environment....
asked 20 minutes ago -
Two forces are acting on an object. Force 1 on the object is 6.0
N and...
asked 21 minutes ago -
You are planning for retirement. You plan to work for 20 years.
Starting a year from...
asked 35 minutes ago -
The African Adventures exhibit water system holds approximately
850,000 gallons (3.2x109 g) of water. The temperature...
asked 26 minutes ago -
which of the following is capital?
the barn a farmer uses to hold the chickens he...
asked 36 minutes ago -
Attribute
Sample Value
Sample Value
Sample Value
Sample Value
pirate_num
11
22
43
54
pirate_lname
James...
asked 30 minutes ago -
10. Two forces act on a 3 kg object, the gravitational force and
a second, constant...
asked 47 minutes ago -
Dividing Partnership Net Loss
Leigh Meadows and Byron Leef formed a partnership in which the
partnership...
asked 43 minutes ago -
Discuss how Entrepreneurial leadership style differs
from traditional leadership?
asked 1 hour ago -
A futuristic design for a car is to have a large solid
disk-shaped flywheel within the...
asked 1 hour ago